<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
		$username = $this->username;
    $users = Admin::model()->find('LOWER(username)=?', array(
      //strtolower($this->username)
      $username
    ));
    
    if(empty($users))
    $this->errorCode=self::ERROR_USERNAME_INVALID;
    elseif($users->password !== md5($this->password))
    $this->errorCode=self::ERROR_PASSWORD_INVALID;
    else {
      $this->setState('id', $users->id);
      $this->setState('username', $users->username);
      $this->setState('fullname', $users->fullname);
      $this->errorCode=self::ERROR_NONE;
    }
    return !$this->errorCode;
	}
}